Piping for and installation of radiators in accordance with 'Safe Water Installation'

Transcription

1 84 PTB.1 Heating and sanitation Piping and installation of radiators Piping for and installation of radiators in accordance with 'Safe Water Installation' Pre-conditions Preparation Self-control Execution This work instruction is designed for use in detailed planning and preparation of work on construction projects. With thorough planning high levels of personal safety and optimal work apportionment can be achieved at the same time as the work can be organized efficiently and cost effectively.

2 Pre-conditions 1(4) Explanations Building component: 84 Heating and sanitation Piping and installation of radiators 2 (14) Plumbing safely means that works are: installed according to installation instructions. checked against the attached checklist. performed according to certain rules by an installer who is authorized and who possess branch legitimacy. documented by certificates are submitted to the client. See also: The rules have been established for the following reasons: * Health aspecta: * Safety: Risk of burns, legionella infection and other infections. Secure Installation = lower life cycle cost.

3 Pre-conditions 2(4) Safety Protective gear Building component: 84 Heating and sanitation Piping and installation of radiators 3 (14) Requirements of Safe Water Installation: Materials from different manufacturers should not be mixed. Examples of piping

4 Pre-conditions 3(4) Safety Risk assessment Building component: 84 Heating and sanitation Piping and installation of radiators 4 (14) Work activity & Problem P C Risk= P*C Action Overloading, stretching Use the transport and lifting aids for radiators Fall from ladder, fall injuries Wider use of scaffolding Cluttered workplace =Twisting or fall injuries Regular tidying Assessment of probability Assessment of consequences Probability = P P = 0,1 Very unlikely (<1 times/10 years) C=0,5 Trifle Consequence = C P = 1 Unlikely (1 times/10 years) C=1 Tiny ( 1-2 days sick leave) Risk = P * C P = 3 Low probability (1 times/3 years) C=5 Small ( 3-7 days sick leave) P = 10 Relative probability (1 times/year) C=15 Tactile ( ) P = 30 Probable (1 times/month) C=70 Severe ( ) C=500 Very severe (> )

5 Pre-conditions 4(4) Safety Protective gear Building component: 84 Heating and sanitation Piping and installation of radiators 5 (14) Text from the Working Environment Authority s brochure Safer Construction Work First Aid 31 First aid should be provided. Staff who are trained to provide first aid should always be made available. Facilities and first-aid equipment should be marked with signs. There will also be signs indicating telephone numbers for ambulance and police, address and, if necessary, a route description. Provisions for First Aid is also available in AFS 1999:7 "First aid and emergency support. Access routes 63 For each location where work is performed, there shall be safe means of access such as stairway or gangway. Leaning ladder is usually not suitable as an access. Access and transportation and 53 Between different levels there shall normally be a stair or ramp. If the level difference between the two levels is more than ten metres and this means that workers have to walk a lot on stairs, a lift shall be provided in addition to stairs.

6 Building component: 84 Heating and sanitation Piping and installation of radiators 6 (14) Preparation 1(2) Equipment and machinery Equipment for drawing PEX pipes Besides the plumber s usual equipment required for installation of PEX pipe Uponor Pipe For perpendicular and burr-free cutting of PEX pipe dimension mm conduit with dimensions: 25/20, 28/23 and 34/29 respectively. Expander Tool: Manuell eller batteridriven

7 Preparation 2(2) Deliveries - logistics Radiators and convectors are heavy and bulky. Much time and effort is spent transporting them. The stockpile should be planned to minimize transportation and injuries. PEX pipes Wirsbo- PEX pipes are made of 'cross-linked polyethylene' which neither rusts nor gets covered with verdigrease. Qualities which can eliminate common causes of leaks. It is installed without joints and is provided with an outer protective pipe that flows into a 'safe' place and reveals any leaks. This is particularly important in embedded pipes. Building component: 84 Heating and sanitation Piping and installation of radiators 7 (14) The protection tube Heat conduction and cold water lines should be separated so that the heat transfer between the pipes is not effected. Shall protect against damage and lead lout leakage. It also meets the requirements of interchangeability in the same way as electrical cables may be replaced in their protective tubes can PEX pipes be replaced after many years even when cast into the building frame. Installation Requirements The tubes should be laid with gentle bends with large radii to facilitate any future interchanging of PEX pipe. The Uponor manifold cabinet requires wall thickness of 95 mm! Other requirements Max pressure of 1 MPa and 95 degrees C.

8 Self-control 1(2) Template & instructions Building component: 84 Heating and sanitation Piping and installation of radiators 8 (14) No Check Metod or equipment Frequency Result Date Signature 1 Leakage testing According Uponor, Checklist After installation Deviation/Remedy Approval/Non-A 2 Functional control After installation

9 Self-control 2(2) Key points Building component: 84 Heating and sanitation Piping and installation of radiators 9 (14) Quality criteria for the project and the product Study Drawings, Specifications and Control plan Think through the alternative methods of production and handling of materials, tools etc. that can meet the requirements Pay particular attention to Set out and check pipe routing Do not mix different brands Mount radiators according to the manufacturer's instructions Do not mount damaged or faulty radiators or pipes

10 Execution 1(5) Work activity Building component: 84 Heating and sanitation Piping and installation of radiators 10 (14) Routing of vertical sewage and waste pipes: In the basement up to the risers in stairwells. On the wall below shows the pipes for: Heat Circulation Cold and hot water Heating convectors Underfloor Heating In the stairwells the pipes lead up the shaft before the pipes are distributed to each apartment. Cast-in pipes are collected together in a 'central' in the apartment. This is built into the plasterboard walls.

11 Execution 2(5) Work activity Building component: 84 Heating and sanitation Piping and installation of radiators 11 (14) When embedding in floors and walls The pipes shall be laid with large radius given that PEX pipes must be capable of being replaced. Stable fixation, here on the reinforcement Cast-in heating pipes here seen sticking up for subsequent connection into a distribution cabinet.

12 Execution 3(5) Work activity Building component: 84 Heating and sanitation Piping and installation of radiators 12 (14) Heating pipes are embedded in the concrete screeding For frame constructions with pre- cast units, the installations are embedded in the concrete floor screeding. The building height is small, just a few centimeters, and, therefore, intersecting pipes, large bends etc. should be avoided. Collection of pipes at the sub-station

13 Execution 4(5) Work activity Building component: 84 Heating and sanitation Piping and installation of radiators 13 (14) Wall brackets fixtures At penetrations in plasterboard walls, it is necessary to fix the pipes. Many external walls are built using wooden studding. Otherwise steel is most common at the present time.

14 Execution 5(5) Work activity Building component: 84 Heating and sanitation Piping and installation of radiators 14 (14) Radiators and convectors mounted Some can be installed before laying the floor - here parquet. Others must be installed afterwards as evidenced by the photos. - Why? Mounting brackets for wall mounted radiators are carefully set-out and with fastenings adapted to the wall material. Finally: Covering and protection!